LastPass attacker stole password vault data, showing Web2's limitations
Password management service LastPass was hacked in August 2022, and the attacker stole users’ encrypted passwords, according to a Dec. 23 statement from the company. This means that the attacker may be able to crack some website passwords of LastPass users through brute force guessing.
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LastPass first disclosed the breach in August 2022 but at that time, it appeared that the attacker had only obtained source code and technical information, not any customer data. However, the company has investigated and discovered that the attacker used this technical information to attack another employee’s device, which was then used to obtain keys to customer data stored in a cloud storage system.
As a result, unencrypted customer metadata has been revealed to the attacker, including “company names, end-user names, billing addresses, email addresses, telephone numbers, and the IP addresses from which customers were accessing the LastPass service.”
In addition, some customers’ encrypted vaults were stolen. These vaults contain the website passwords that each user stores with the LastPass service. Luckily, the vaults are encrypted with a Master Password, which should prevent the attacker from being able to read them.
The statement from LastPass emphasizes that the service uses state-of-the-art encryption to make it very difficult for an attacker to read vault files without knowing the Master Password, stating:
Even so, LastPass admits that if a customer has used a weak Master Password, the attacker may be able to use brute force to guess this password, allowing them to decrypt the vault and gain all of the customers’ website
Read more on cointelegraph.com
